In this paper the principle of this kind of attack is analyzed,the attack detecting technology and the protecting measures against IP spoofing are also given. And still we discuss the difference between IP spoofing and IP hijacking.

The principle of independence and taking the initiative in their own hands in the management of churches is a historical choice made by the Chinese religious believers of their own accord as part of the Chinese people's struggle against colonialist and imperialist aggression and enslavement.

At present, a major tendency is to go against the decomposition principle and "a scientific research management with economic ways" is unable to embody the basic principles of scientific research management.

The germ warfare was the major means that Japan used in its aggression against China and other countries in World War Ⅱ,and that in Changde was only one case of its violation of the international convention and the moral principle.